Why does my car overheat after getting off the freeway

Tiny
KHLOW2008
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Is the radiator new or used? Is it OEM? Was anything done to the cooling fan motor or its wiring?

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Tuesday, July 3rd, 2012 AT 4:31 PM
Tiny
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I forgot this. If the radiator is the cause, the temperature reading would most probably increase the faster you drive, unless you are not driving very fast.

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Tuesday, July 3rd, 2012 AT 4:33 PM
Tiny
KICKJON1985
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I am not sure if it is oem or not to tell u the truth. It was the only one that the auto parts store carries. It was $80. I scheduled a chem flush and pressure test for thursday to tess the pressure of the system and to see if maybe the added flow of the new radiator may have broke some deposits loose or not.

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Tuesday, July 3rd, 2012 AT 5:27 PM
Tiny
KICKJON1985
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No nothing was done to the fan or its wiring. It was disconnected while the radiator was changed but nothing else. I changed the ect switch and the relay.

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Tuesday, July 3rd, 2012 AT 5:55 PM
Tiny
KICKJON1985
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Today before I left work I checked my coolant level ( which was fine) I noticed that I could squeeze the radiator hoses and cause coolant to flow into the overflow tank. So when I got home I decided to see how much pressure would be in the system by pulling the radiator cap and to my suprise I was able to pull the cap without it spewing everywhere! I am going to try the old cap that came with the radiator to see if the same thing can happen. But I do know that is mot suppose to be able to be done. If the original cap can do the same thing, does it sound like the neck to the radiator is bad? Obviously if the neck is bad then the radiator is.

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Wednesday, July 4th, 2012 AT 3:08 AM
Tiny
KHLOW2008
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Coolant flowing back to the recovery tank while squeezing the hoses indicates the radiator cap is not maintaining pressure. It could be the radiator neck or you have the wrong radiator cap. There are 2 different types of radiator cap and they differ in height and design.

Measure the depth of the radiator neck and compare it to the height of the cap. Cap should be minimally higher.

At radiator neck, check for flushness of the seats for the inner radiator cap seal.

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Wednesday, July 4th, 2012 AT 4:25 PM
Tiny
KICKJON1985
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Its interesting, cause I kept the old radiator cap that came with the radiator and when I discovered this I tryed that cap on it again and it didnt do the same thing. All the caps at the auto parts store are exactly the same, only difference is that one is a pressure release and the other is not.

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Wednesday, July 4th, 2012 AT 5:04 PM
Tiny
KICKJON1985
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Ok I had my system pressure tested and that was fine but a honda mechanic said that hes seen that before and it was the water pump. So I had the water pump replaced and all the timing components. It seems to have fixed the problem, but there is still a small fluctuation in the temperature gauge. Its only a small amount, maybe an sixteenth of an inch or so, so far. Does this sound normal? Its never moved like that before, that I can remember.

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Sunday, July 8th, 2012 AT 8:42 PM
Tiny
KICKJON1985
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When I replaced the thermostat a while ago I did put a fail safe one in. Maybe that?

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Sunday, July 8th, 2012 AT 8:44 PM
Tiny
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If the fluctuation is gradual and not too obvious, that is normal but not too much movement.

When the water pump was removed, did you check if the impellers were worn or loose? They do occur randomly.

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Sunday, July 8th, 2012 AT 8:48 PM

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